(A/n)
This wasn't planned but it worked out well this way, there's going to be some blood involved with this! If you're uncomfortable with that, just know it'll be closer to the end of the chapter.

"You want me......?" You scooted closer, hit with a sudden feeling of nervousness as Shanks guided you to straddle him.

When you were in his lap, you were eye level with him and very close. More so than you ever thought you'd be.

It was then that he managed to catch your gaze and you felt all your nerves disappear. Being like this was relaxing, comfortable. He was doing a glamor on you, that much you could tell, but the knowledge didn't break the effect. It wasn't like it bothered you anyway, you still were able to think clearly but now nothing he did could make you uncomfortable, you were sure of it.

He gave you a tired smile and your heart immediately leapt to your throat. The blaze of red hair framed his face perfectly, his dark eyes were the most welcoming ones you'd ever seen, his lips were practically begging to be kissed and you couldn't stop yourself from leaning forward to do just that.

Even for you it was bold but the urge was too much to resist. In this moment, he was the most gorgeous man you'd ever seen and you needed this. Instead of pulling away, he traced his fingers along your jaw delicately until they moved up to dive into your hair, holding you in place. His tongue slid along your lips, encouraging them to part for him.

The second you allowed him to explore your mouth, a warmth began to build and coil wonderfully in your belly. The feeling only grew when he gave your hair a quick tug and parted from you, a sparkle in his eye that wasn't there moments ago.

"We can stop at any time." He reminded you as his grip loosened on your hair.

You couldn't say a single word in response as he trailed a finger down the curve of your neck. Your breaths came in unsteady pants as he brushed along the collar of your shirt before pushing it down enough to see the beginning swell of your breasts. The finger feathered along the exposed skin, just enough to leave a trail of goosebumps in it's wake. A shudder went down your spine at the sensation as you bravely met his stare once again, not caring if he'd catch you in a glamor again. Then only one word came to mind.

"Incubus." You murmured. A warmth like no other spread through your body as he let out an affirmative hum.

"Very good. And I assume you know what that means if we keep going then?" His hand dropped to your thigh and he gave it a rough squeeze.

It took everything in you to not let out the moan that threatened to leave you. You'd never wanted someone to take you so badly before.

"Yes." You closed your eyes in hopes of it helping you focus and gave him a quick nod.

"And you still want to keep going?" His voice was like honey or the finest silk, invading your senses in only the best of ways.

You nodded again. He needed this and you were willing to give yourself to him. If he was willing to help you with something as scary as a first shift, you could have sex with him. He needed it to survive after all.

"Look at me then, let me hear you say it."

The command was gentle but firm, and impossible to ignore. You looked at him once again, the sense of calm settling back in enough for you to really find your voice.

"I want to keep going."

And just like that, a wave of pure lust hit you. It was like an intense craving that you knew only he could satisfy. His hand slipped under your shirt, feeling up your side. His touch practically burned and you couldn't get enough of it. Without even realizing it, you'd grabbed at his shirt, balling it up in your fists. Your hips jerked against his as his mouth found your collar, somehow hitting all the most sensitive spots without even trying.

The first real moan left you as you felt a growing bulge rub against you. Shanks' breath hitched at the sound, his teeth grazing your skin. They felt different, sharp. The second you noticed that, he pulled away and lifted your shirt up, helping you out of it. When it fell to the ground, he flashed you a toothy smile, confirming what you thought. His teeth were all slightly elongated, his canines especially, and they came to a bit more of a point. Now you could tell what he meant about having slip ups.

It didn't scare you though. He didn't so much as even knick you with them moments ago. If anything right now, you were more focused on getting his shirt off. He always wore shirts that revealed just enough of his chest to entice you and now you wanted to see everything. Your gaze dropped to the bit of skin he had showing while your hands tugged at the hem, pushing under to feel him.

There was a snap and your bra loosened, the straps falling down your shoulders. Shanks had no problem undoing the clasps with one hand and as soon as he had that done, he removed his shirt in one quick motion, giving you the view you'd been wanting for some time now.

The only scars he seemed to have were the three lines going over his eye and the mass of malformed tissue at the end of what remained of his left arm. You'd never seen his arm until now but all you spared it was a quick, curious look. Knowing it was there, in that state, didn't bother you. Nothing about it or Shanks had changed since you met him and that wouldn't be different now.

Instead, you focused on admiring the expanse of his perfectly sculpted, tanned torso. The muscles were well defined, each dip and swell felt like heaven under your fingertips as they traced along everything. You only stopped your exploration when your bra started getting in the way. Shanks wasn't able to take it off the rest of the way with you being so engrossed in him but now it was just distracting. It'd fallen down until the straps rested around your elbows, giving him a view of your chest.

The entire time he'd been appreciating it, seemingly enjoying the slow pace you two were going at. A small, almost satisfied smile played at his lips while you tossed the bra to the floor, removing the last thing obstructing his full view.

You hadn't noticed it, but his hand had fallen to your hip after he lost his shirt. Now that there was nothing in the way, it followed the curves of your body up to your breasts. His thumb gently caressed the side of one before he met your stare. As soon as he leaned forward, you met him halfway for a kiss. You whined into it when he began pinching and rolling your nipple between his fingers.

The sound quickly turned into a needy moan as he rolled his hips against yours, grinding himself into you through the layers of clothes. The loose fitted pants he had on did little to hide his erection and now that he'd brought it to your attention, you wasted no time feeling along his clothed length.

Your breath came out as a sudden, sharp gasp when Shanks grabbed a fistful of your hair and pulled, forcing you to separate. The rough action somehow only turned you on more and you ached to free him of his confines.

"Let's not get ahead of ourselves." He said before dragging his tongue along your throat. "I still need more from you."

You trembled and whined, fingers twitching at the hem of his pants. You didn't remember them getting there but you wanted to finish the job that they had tried to start.

"Shanks...."

"Take your pants off." He released you, making sure to give your hair one more curt tug before doing so, like he knew you'd enjoy it.

There was a bit of frustration as you slipped out of his lap to stand in front of him but you were moving without much of a choice, like the time he made you get in his car the day you told him about your wounds.

"I thought you just needed sex." You complained with a pout as you shimmied out of your pants, leaving just the panties on.

"It's a little more complex than that." He licked his lips and beckoned you closer, which you did without a second thought. "I'll explain it for you later but for now, we're going to take a little more time."

You were back to straddling his lap with only your panties and the thin cloth of his sweat pants separating you two. More than anything, you wanted those barriers gone but you knew he wouldn't allow it. Not yet.

When you were settled, he wasted no time grazing his fingers along your damp panties, ghosting just over your most sensitive spots. His lips brushed against your ear as he let out a small sigh.

"So wet for me already."

He added more pressure and rubbed around your clit until you were moaning and burrowing your face in the crook of his neck to hide your blush.

"Shanks....ah!"

You jerked forward when he moved under your panties to touch you directly. His fingers slid along your folds and played with your clit mercilessly. You wrapped your arms around his neck, one hand digging into a shoulder while the other tangled itself in his hair for some semblance of support. The achingly warm knot in your belly was tightening quickly and you knew it wouldn't be long until you were coming undone for him.

Your moans and cries flowed from your lips without pause and it wasn't hard to tell Shanks was enjoying every second of it. His cock strained against his pants, just begging to be freed so he could finally take you.

When you were trembling, your voice caught in your throat as you teetered right at the edge, he pulled away. You let out a cry of frustration as you slumped into him.

Shanks ignored it and reached over to the side table. You hadn't noticed the metallic wrapper placed on it in plain view, he'd been prepared for if you agreed.

"Give me a hand?" His mouth twisted into a grin at his own joke and the life in his eyes was impossible to miss.

The worn down look he had when you came through the door not long ago was completely gone and he was more vibrant than he'd been in a few days. You took the offered condom from his hand, your fingers shaking from the near orgasm he'd denied you. While you opened it, he reached in his pants and pulled out his member. You could hardly contain your excitement as he guided you in covering his length.

From there, he let you take control, choosing to grasp your chin and make you keep eye contact as you moved your panties to the side and slowly took him in. You couldn't contain the gasp that came out as he stretched your walls and filled you.

"Such a lovely face." He groaned.

As soon as your hips were flush with his, you began moving. Each rock of the hips drew gradually louder grunts and heavier breaths from him to accompany your moans. It was quickly pushing you back to the edge but this time, it was different. Your inner animal was there now, awake and pacing under your skin, itching for that same release.

At first you thought it was just you but a sudden, stinging prick to your thigh made you realize you were responding to Shanks' energy. He was gripping at your flesh with a hand that had turned an oily black. Fingers had morphed into claws that had dug into your skin enough to break it, letting small beads of blood well to the surface. When he let out a growl, you looked up to see his head had fallen to rest on the back of the couch. His clenched teeth looked more dangerous than ever and above his head, you swore you saw the silhouette of dark horns starting at his temples and curving up elegantly.

His claw tightened around your thigh as you sped up, encouraged by the jaguar inside. It wanted this just as much as you did and you could feel it making your body do something similar to what Shanks was doing. Your muscles tensed and coiled, canines grew to sharp points along with your nails that in turn, raked down his shoulders.

"Shit...." Shanks groaned, seemingly unbothered by the trails of red left behind.

His adam's apple bobbed as he swallowed, drawing your attention to his throat. You could see the veins pulsing, right under the skin. Your cat zeroed in on the sight, urging you to bite down on the delicate area. And you almost did.

Like the times you'd been caught in Shanks' eyes, your body moved of its own accord and before you knew it, your teeth were grazing against his soft neck. Your tongue flicked out to wet the skin, feeling the reverberations as he let out a drawn out groan of pleasure. It was enough to make you shudder uncontrollably and whimper.

Your pace had slowed with your focus being split between sex and your jaguar's strange need for blood and it was enough to make Shanks take the reigns once again. He palmed your ass and easily lifted you with the one hand. As soon as he began thrusting into you harder, the need to climax won and instead of his throat, you bit into his shoulder.

Your canines sunk in all too easily as a powerful orgasm hit you. Each wave sent fresh shudders down your spine and they didn't stop until he grunted loudly and held you down by the waist as he came.

Just as soon as it had made an appearance, your cat seemed to slink back into the recesses of your mind, content with how things had played out. You didn't completely understand what had happened until a couple minutes after, when you released Shanks and tasted the familiar, coppery blood in your mouth.

"Oh my God!" You gasped and jerked back to inspect the wound. "I'm so sorry!"

But Shanks looked unphased. His head was still leaned back and there was a far off, almost drunk expression on his face, complete with a wide smile. His features had all returned to normal, not a single sign that he'd practically gone half demon on you.

"Don't worry about it." He hummed. "Sex with shifters is always a little on the wild side. Besides, I'll heal up almost as fast as you do now that we're done."

Sure enough, when you wiped the small drips of blood, you could see the petite holes knitting themselves back together, just like your cut had after you'd broken a glass some time ago. You let out a sigh of relief and adjusted yourself until Shanks was able to slip out of you and remove the spent condom.

With the initial worry gone, you leaned into him as you quickly began to feel tired. All you knew about incubi and sucubi was that they fed off of sex to survive and it left their victims or in your case, volunteers, tired. But you didn't think it'd leave you like this. In a matter of seconds, you went from your usual energy levels to barely able to keep your eyes open. You let out a yawn and clung to Shanks for warmth.

"That can't be comfortable (Y/n)." He chuckled. "Let's get you to bed."

There were no protests on your end when he picked you up and carried you to your room. You didn't have the energy for it, even if you wanted to.

(A/n)
For those of you that don't know, an incubus can also be referred to as a nightmare, I did a bit of research on it when I was trying to figure out what Shanks should be. My first thought was vampire but that felt too obvious and besides, Mihawk fits that aesthetic better to me. Also, there's honestly not a ton on incubi so some stuff about him, and other creatures, is how I interpret stuff.